<template>
    <div></div>
</template>

<script>
import * as THREE from 'three';

export default {
    name: "DrawingLines",
    mounted() {
        /**
         * 创建场景对象Scene
         */
        let scene = new THREE.Scene();
        /**
         * 创建网格模型
         */
            // let geometry = new THREE.SphereGeometry(60, 40, 40); //创建一个球体几何对象
        let geometry = new THREE.BoxGeometry(50, 100, 200); //创建一个立方体几何对象Geometry
        let material = new THREE.MeshLambertMaterial({
            color: 0x00ff00
        }); //材质对象Material
        let mesh = new THREE.Mesh(geometry, material); // 网格模型对象Mesh
        scene.add(mesh); //网格模型添加到场景中
        /**
         * 光源设置
         */
            //点光源
        let point = new THREE.PointLight(0xeeeeee);
        point.position.set(400, 800, 600); //点光源位置
        scene.add(point); //点光源添加到场景中
        //环境光
        let ambient = new THREE.AmbientLight(0x666666);
        scene.add(ambient);
        // console.log(scene)
        // console.log(scene.children)
        /**
         * 相机设置
         */
        let width = window.innerWidth; //窗口宽度
        let height = window.innerHeight; //窗口高度
        let k = width / height; //窗口宽高比
        let s = 400; //三维场景显示范围控制系数，系数越大，显示的范围越大
        //创建相机对象
        let camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);
        camera.position.set(800, 300, 200); //设置相机位置
        camera.lookAt(scene.position); //设置相机方向(指向的场景对象)
        /**
         * 创建渲染器对象
         */
        let renderer = new THREE.WebGLRenderer();
        renderer.setSize(width, height);//设置渲染区域尺寸
        renderer.setClearColor(0xb9d3ff, 1); //设置背景颜色
        document.body.appendChild(renderer.domElement); //body元素中插入canvas对象
        //执行渲染操作   指定场景、相机作为参数
        renderer.render(scene, camera);

    }
}
</script>

<style scoped>

</style>
